Denote pins as unconnected in electronic schematics
In the Design toolbar, click Connect > Net
to open the Net panel.
Note: Connection is selected by default.In the Net panel, click No Connection
A cross mark attaches to the cursor for placement.
Click on the desired pin to place a mark on pins that should remain unconnected.
The No Connection mark appears on the pin.
When you have finished marking the pins, click Done to close the Net panel.
Bulk mark pins as unconnected
Select one or multiple pins in the Design Manager persistent panel Items table,
Right-click and choose Place No Connection mark.